Fix for memory leak in GtsEHeap with glib >= 2.10
Fix for memory leak in GtsEHeap with glib >= 2.10

The GMemChunk glib structure previously used for allocating GtsEHeapPair is
deprecated in glib 2.10.

Furthermore, it seems that the new slice allocator in glib 2.10 is not
backward compatible with GMemChunk (despite what is said in the doc). This
causes massive memory leaks.

The solution is to use good old g_malloc instead.

darcs-hash:9733388cef689d969f6c5b4b0014cbc88e60fe94

slitvinov/gts,slitvinov/gts