Added and improved comments.
Cleanup using C99.
Added some missing SET_IA32_ORIG_NODE macros.
Generate a ConvI2I for small modes.

This fixes opt/fehler226.c.
cleanup, use C99
debugger: allow any chars except space and ';' in dumpfilter names

Previously only valid identifier were accepted.
cleanup, fix leaking heights analysis
lower_calls: change parameter Proj numbers in an extra phase

This avoids problems where fixing Sels creates new Projs which must not
be changed. The previously broke valid cases in opt/structcall3.c for sparc.
do the fix the other way round to avoid verify errors
Cleanup using C99.
Revert "bring back bitfield sel skipping in irmemory.c"

This reverts commit f56426a9834ed2a0c4617bf2313ad96dc05c03ac.
Skipping a bitfields within a struct leads to wrong offsets.
Cleanup using C99.
Fixed alias relation for two entities.