[gnome-db] suggestion for libgda.pc.in

[Dru <andru treshna com>]

Though this is a very minor issue, I prefer #include <libgda.h> than 
<libgda/libgda.h> as it fits in with other includes in gnome libraries.  
What do people think of adding support for #include <libgda.h> directly?

Suggested change to pc.in file:

Name: libgda
Description: GDA (GNOME Data Access) library
Requires: glib-2.0 libxml-2.0 libxslt
Version: @VERSION@
Libs: -L${libdir} -lgda-2
Cflags: -I${includedir} -I${includedir}/libgda