Revert "Disable failing Cygwin GIR test."

This partially reverts commit add502c648.

test cases/frameworks/11 gir subproject/meson.build

@@ -5,10 +5,6 @@ if not gir.found()
   error('MESON_SKIP_TEST g-ir-scanner not found.')
 endif
 
-if build_machine.system() == 'cygwin'
-  error('MESON_SKIP_TEST GIR seems to be broken in Cygwin and no-one knows how to fix it. Thus we have to disable this.')
-endif
-
 python3 = import('python3')
 py3 = python3.find_python()
 if run_command(py3, '-c', 'import gi;').returncode() != 0

test cases/frameworks/12 multiple gir/meson.build

@@ -5,10 +5,6 @@ if not gir.found()
   error('MESON_SKIP_TEST g-ir-scanner not found.')
 endif
 
-if build_machine.system() == 'cygwin'
-  error('MESON_SKIP_TEST GIR seems to be broken in Cygwin and no-one knows how to fix it. Thus we have to disable this.')
-endif
-
 gnome = import('gnome')
 gobj = dependency('gobject-2.0')
 

test cases/frameworks/22 gir link order/meson.build

@@ -4,10 +4,6 @@ if not dependency('glib-2.0', required : false).found() or not find_program('g-i
   error('MESON_SKIP_TEST glib not found.')
 endif
 
-if build_machine.system() == 'cygwin'
-  error('MESON_SKIP_TEST GIR seems to be broken in Cygwin and no-one knows how to fix it. Thus we have to disable this.')
-endif
-
 gnome = import('gnome')
 glib = dependency('glib-2.0')
 gobject = dependency('gobject-2.0')

test cases/frameworks/28 gir link order 2/meson.build

@@ -4,10 +4,6 @@ if not dependency('gobject-2.0', required : false).found() or not find_program('
   error('MESON_SKIP_TEST gobject not found.')
 endif
 
-if build_machine.system() == 'cygwin'
-  error('MESON_SKIP_TEST GIR seems to be broken in Cygwin and no-one knows how to fix it. Thus we have to disable this.')
-endif
-
 gnome = import('gnome')
 gobject = dependency('gobject-2.0')
 

test cases/vala/11 generated vapi/meson.build

@@ -1,9 +1,5 @@
 project('vapi-test', ['c', 'vala'])
 
-if build_machine.system() == 'cygwin'
-  error('MESON_SKIP_TEST GIR seems to be broken in Cygwin and no-one knows how to fix it. Thus we have to disable this.')
-endif
-
 gnome = import('gnome')
 subdir('libfoo')
 subdir('libbar')