Remove $Id$ tags, update URL's, and more

- remove obsolete svn '$Id$' tags from all source files
- update .fl files and generated files accordingly
- replace 'http://www.fltk.org' URL's with 'https://...'
- replace bug report URL 'str.php' with 'bugs.php'
- remove trailing whitespace
- fix other whitespace errors flagged by Git
- add and/or fix missing or wrong standard headers
- convert tabs to spaces in all source files

The only relevant code changes are in the fluid/ folder where
some .fl files and other source files were used to generate
the '$Id' headers and footers.

1 files changed, 15 insertions, 21 deletions

diff --git a/test/glpuzzle.cxx b/test/glpuzzle.cxx
index 8a97e8f4b..5f265f55e 100644
--- a/test/glpuzzle.cxx
+++ b/test/glpuzzle.cxx
@@ -1,6 +1,4 @@
 //
-// "$Id$"
-//
 // OpenGL puzzle demo for the Fast Light Tool Kit (FLTK).
 //
 // This is a GLUT demo program to demonstrate fltk's GLUT emulation.
@@ -14,9 +12,9 @@
 //
 //     https://www.fltk.org/COPYING.php
 //
-// Please report all bugs and problems on the following page:
+// Please see the following page on how to report bugs and issues:
 //
-//     https://www.fltk.org/str.php
+//     https://www.fltk.org/bugs.php
 //
 
 // Convenience options 'n' and ' ' and command line switch '-n' added for FLTK
@@ -39,9 +37,9 @@ int main(int, char**) {
 #include <sys/types.h>
 #include <time.h>
 #include <math.h>
-#include <FL/glut.H>	// changed for fltk
+#include <FL/glut.H>    // changed for fltk
 #include <FL/glu.h>     // added for fltk
-#include "trackball.c"	// changed from trackball.h for fltk
+#include "trackball.c"  // changed from trackball.h for fltk
 
 #define WIDTH 4
 #define HEIGHT 5
@@ -879,7 +877,7 @@ invertMatrix(const GLfloat src[16], GLfloat inverse[16])
   makeIdentity(inverse);
 
   for (i = 0; i < 4; i++) {
-    /* 
+    /*
        ** Look for largest element in column */
     swap = i;
     for (j = i + 1; j < 4; j++) {
@@ -889,7 +887,7 @@ invertMatrix(const GLfloat src[16], GLfloat inverse[16])
     }
 
     if (swap != i) {
-      /* 
+      /*
          ** Swap rows. */
       for (k = 0; k < 4; k++) {
         t = temp[i][k];
@@ -902,7 +900,7 @@ invertMatrix(const GLfloat src[16], GLfloat inverse[16])
       }
     }
     if (temp[i][i] == 0) {
-      /* 
+      /*
          ** No non-zero pivot.  The matrix is singular, which
          shouldn't ** happen.  This means the user gave us a
          bad matrix. */
@@ -928,9 +926,9 @@ invertMatrix(const GLfloat src[16], GLfloat inverse[16])
 
 /*
    ** This is a screwball function.  What it does is the following:
-   ** Given screen x and y coordinates, compute the corresponding object space 
+   ** Given screen x and y coordinates, compute the corresponding object space
    **   x and y coordinates given that the object space z is 0.9 + OFFSETZ.
-   ** Since the tops of (most) pieces are at z = 0.9 + OFFSETZ, we use that 
+   ** Since the tops of (most) pieces are at z = 0.9 + OFFSETZ, we use that
    **   number.
  */
 int
@@ -969,10 +967,10 @@ computeCoords(int piece, int mousex, int mousey,
     finalMatrix[3 * 4 + 3];
   d = finalMatrix[2 * 4 + 3];
 
-  /* 
-     ** Ok, now we need to solve for z: **   (a + b z) / (c + d 
+  /*
+     ** Ok, now we need to solve for z: **   (a + b z) / (c + d
 
-     z) = height. ** ("height" is the height in object space we 
+     z) = height. ** ("height" is the height in object space we
 
      want to solve z for) ** ** ==>  a + b z = height c +
      height d z **      bz - height d z = height c - a ** z =
@@ -984,12 +982,12 @@ computeCoords(int piece, int mousex, int mousey,
 
   z = top / bot;
 
-  /* 
+  /*
      ** Ok, no problem. ** Now we solve for x and y.  We know
      that w = c + d z, so we compute it. */
   w = c + d * z;
 
-  /* 
+  /*
      ** Now for x and y: */
   *selx = (in[0] * finalMatrix[0 * 4 + 0] +
     in[1] * finalMatrix[1 * 4 + 0] +
@@ -1096,7 +1094,7 @@ moveSelection(float selx, float sely)
   } else {
     if (deltay > 0 && thePuzzle[selecty][selectx] == 10 &&
       selectx == 1 && selecty == 3) {
-      /* Allow visual movement of solution piece outside of the 
+      /* Allow visual movement of solution piece outside of the
 
          box */
       move_x = selectx;
@@ -1497,7 +1495,3 @@ main(int argc, char **argv)
 }
 
 #endif // added for fltk's distribution
-
-//
-// End of "$Id$".
-//