Adapt mkgen.pl to create the .gitignore file with Win32 executables

The .gitignore file in plug-ins/common is created by mkgen.pl, just
like Makefile.am in this directory. Changed the script to also
include names of the Microsoft Windows executables in the created
.gitignore file.

plug-ins/common/.gitignore

@@ -55,9 +55,9 @@
 /contrast-retinex
 /contrast-retinex.exe
 /contrast-stretch
+/contrast-stretch.exe
 /contrast-stretch-hsv
 /contrast-stretch-hsv.exe
-/contrast-stretch.exe
 /convolution-matrix
 /convolution-matrix.exe
 /crop-auto
@@ -83,6 +83,7 @@
 /displace
 /displace.exe
 /edge
+/edge.exe
 /edge-dog
 /edge-dog.exe
 /edge-laplace
@@ -91,7 +92,6 @@
 /edge-neon.exe
 /edge-sobel
 /edge-sobel.exe
-/edge.exe
 /emboss
 /emboss.exe
 /engrave
@@ -263,6 +263,7 @@
 /threshold-alpha
 /threshold-alpha.exe
 /tile
+/tile.exe
 /tile-glass
 /tile-glass.exe
 /tile-paper
@@ -271,7 +272,6 @@
 /tile-seamless.exe
 /tile-small
 /tile-small.exe
-/tile.exe
 /unit-editor
 /unit-editor.exe
 /unsharp-mask

plug-ins/common/mkgen.pl

@@ -100,10 +100,10 @@ install-\%: \%
 EOT
 
 print IGNORE <<EOT;
-/Makefile
-/Makefile.in
 /.deps
 /.libs
+/Makefile
+/Makefile.in
 EOT
 
 foreach (sort keys %plugins) {
@@ -172,6 +172,7 @@ ${makename}_LDADD = \\
 EOT
 
     print IGNORE "/$_\n";
+    print IGNORE "/$_.exe\n";
 }
 
 close MK;