Add header file for builtin-gconf module

Move type definitions and function prototypes from
builtin-gconf.c to builtin-gconf.h
Always use builtin-gconf when building with make
Drop unused gconf schemas
Do not install unmaintained mcetorture script

Uses gconftool-2 and has not worked as expected for a long time.
Remove unused RFS and CUD scripts

The legacy Restore Factory Settings and Clear User Data scripts
are not used anymore and since they utilize gconftool-2 would not
work anyway.
Remove unused backup and restore scripts

The OSSO/Maemo/Harmattan legacy backup and restore system is not
used or supported anymore.
Remove aegis build support

Not used in Nemomobile and would require Nokia build infra.
Add development time helper targets/rules to Makefile

Keep diffs aligned by enforcing usage of tabulator character to
follow style already used within each source file.

Enable running cproto in two phases: first preprocess in scratchbox
and then actual prototype scanning in normal desktop environment.
Drop gconf-2 build dependency

The gconf headers are no longer needed, build dependency can be dropped.

[mce] Drop gconf-2 build dependency. Fixes JB#19487
Merge pull request #168 from spiiroin/drop_gconf_build_dep

Drop gconf build dependency