Turn on building of the Win32 font backend.
src/cairo-win32-private.h src/Makefile.am: Private header for the Win32 backend.
src/cairo-win32-private.h src/cairo_win32_surface.c: Internally export _cairo_win32_print_gdi_error() for use in the font code.
src/cairo-win32-private.h src/cairo_win32_surface.c: Add _cairo_win32_surface_create_dib to create a DIB surface.
src/cairo-win32-private.h src/cairo_win32_surface.c: Add _cairo_surface_is_win32()
Check for vasnprintf.
Add a simple fixed-buffer size snprintf fallback in the absence of vasnprintf.
Add new testsvg script and accompanying imagediff program, (for interim SVG-based test suites while we wait for the standard cairo test suite to mature).
Split buffer_diff out into its own file for the purpose of imagediff.
Support tests that produce no output, (don't check image if (width,height) == (0,0)).
Add #include <assert.h> here rather than in multiple .c files.
Add const qualifier to static cache_arrangements table. (_cache_sane_state): Remove refcount assertion as it it false during the cairo_cache_destroy. (_cache_sane_state): #include <assert.h> moved up to cairoint.h (_entry_destroy): Fix bug in assertion (used_memory >= entry->memory), not >. (_cairo_cache_destroy): Fix timing of refcount decrement so that the destroy function actually works.
Add header files so that make distcheck is happy. (INCLUDES): Add -D_GNU_SOURCE for asprintf. Someone motivated may want to find a more portable approach. (EXTRA_DIST): Add reference images for the sake of make distcheck.
Don't AC_SUBST a dozen different FOO_CFLAGS and FOO_LIBS. Instead, incrementally build up just CAIRO_CFLAGS and CAIRO_LIBS.
Don't list flags that should get picked up via dependency information through Requires.
Add description of move_to_show_surface.
