We need to do this because constructors run before main() and
thus before any call to g_mem_set_vtable, making it impossible to
use that function if constructors call g_malloc.
We do this by making the constructors just register the static data
for lazy registration, doing the lazy registration when using
the global resource set.
With this we're not longer exporting the constructor headers, which means
we're not tying ourselves to a macro that might need special tweaking on
a compiler-by-compiler basis.
It's hardly useful to bloat the resource data with blanks intended only
for human readability, so add a preprocessing option that uses xmllint --noblanks
to strip these.
Bug #667929.
==13007== 173 bytes in 1 blocks are definitely lost in loss record 90 of 106
==13007== at 0x402AD89: malloc (vg_replace_malloc.c:236)
==13007== by 0x407DDBA: standard_malloc (gmem.c:85)
==13007== by 0x407E318: g_try_malloc (gmem.c:271)
==13007== by 0x40654DE: g_file_get_contents (gfileutils.c:756)
==13007== by 0x804A531: main (glib-compile-resources.c:580)
==13007== 521 (56 direct, 465 indirect) bytes in 1 blocks are definitely lost in loss record 100 of 106
==13007== at 0x402AD89: malloc (vg_replace_malloc.c:236)
==13007== by 0x407DDBA: standard_malloc (gmem.c:85)
==13007== by 0x407E160: g_malloc (gmem.c:159)
==13007== by 0x4091D8D: g_slice_alloc (gslice.c:1003)
==13007== by 0x40674A1: g_hash_table_new_full (ghash.c:676)
==13007== by 0x804B252: gvdb_hash_table_new (gvdb-builder.c:76)
==13007== by 0x43C66B2: (below main) (libc-start.c:226)
Initial underscores are used in c identifier to make them private,
for instance in Gtk+. However, we don't want to have this in the
resource section name, that just looks ugly.
