Gwenhywfar

Added endian macros.

Those are needed to compile the current AqDatabase code on MinGW.
On Windows for now we just assume LITTLE ENDIAN, for Linux we use the
functions from <endian.h>.

Allow building against gnutls-2.9.8.

Prepared release 4.15.3.

Revert "Bump SONAME because of API changes in previous commit"

This reverts commit e4023dbe6538efa0dad51947492e09e4e031c216.

Since the macros whose removal led to the SONAME bump were added back again,
the SONAME bump can be reverted as well.

MsgEngine: Properly parse messages containing optional fields

Consider the case that a message definition contains two elements (or
groups) with varying multiplicty at the end. If the latter has a
value (or several values, for that matter), this can only be...

Fixed some logical errors in TLS code (thanks to Michael McConville for pointing out).

Fixed order of header inclusion for AQDatabase-related files.

Fixed GWEN_TIME representation in typemaker2.

The reason to prefer GWEN_TIME over GWEN_DATE is the time which is
stored in GWEN_TIME in addition to the date. So we need to save and
load the time as well.

Don't build qt5 gui for my own Makefile targets.

Fix build when compiling with old GnuTLS version

This got broken by commit f8771f8c.

Re-add macros for flags related to TLS cipher selection (like Force-SSLv3)

Additionally the deprecated symbols can now get removed during build by
providing -DNO_DEPRECATED_SYMBOLS in CFLAGS. This is intended for test purposes
only.

Some minor improvements in the Qt5 and Qt4 gui

Really boring and unimportant changes I made while reading.

Fixe bug in gwengui-qt5-config.cmake

Also shortend it.

Bump SONAME because of API changes in previous commit

Cleanup TLS cipher suite handling

The Gwenhywfar TLS cipher handling is now limited to either setting a cipher
priority list via the environment variable GWEN_TLS_CIPHER_PRIORITIES or
otherwise the GnuTLS library default is being used.

Fix testsuite for the sourceforge server closing the connection prematurely

Create ca-bundle.crt from latest Mozilla sources.

We use "mk-ca-bundle.pl" from "curl".

Updated ca-bundle.crt. Need a way to automate this...

Adapted my Makefile target to allow building of QT5 gui.

Inserted empty lines.

Fixed AM_CPPFLAGS in qt5 gui.

Added .gitignore.

Added some more files to .gitignore.

Updated cmake config files

Now targets are used which makes the usage even easier. Version
checking was improved. Backwards compatibility is ensured.

Added gui frontend for Qt 5

It is based on the Qt 4 gui. Mainly it replaced all occurences of "4" by "5".