Bug 436885 - c-source and h-source missing for latex

Original title does not cover problem anymore. Problem has evolved to that when clicking on the name for the source file (in LaTeX) a jump to the beginning of the document was made. This problem is fixed with this patch.

- operations on current index and node (next(), prev(), last(), first()) have been removed.
- access to internal nodes has been removed.
- old QList has been renamed to QInternalList for use inside qtools only.
- added type safe compare, new, and delete operations (compareValues(), newValue(), deleteValue()).
- add compareValues also to QDict for consistency.
- changed doxygen's implementation to comply with the new QList and QDict interface.

\xmlonly aoppeared twice in see also section of \htmlonly and \docbookon...

Add support for honoring svg image format preference in msc

usage: make -d print dev doxygen options

This is an extension / improvement to the pull request 67 from  groleo
- make printing of -d levels more flexible (when adding a new one this is now done automatically)
- layout of the message

doxygen version 1.8.5 throws many "Internal Inconsistency" errors when parsing .idl files

A number of error messages lacked the '\n' character

usage: make -d print dev doxygen options

Signed-off-by: Adrian Negreanu <adrian.m.negreanu@intel.com>

Report details about fork() failure in logs.

When parsing a large codebase dot failed to start. Adding this line helped narrow down the issue. Increasing my VirtualBox VM RAM size worked around the issue. A proper fix would be to spawn separate processes without using fork() so they don't start with the giant address space used by the current process.