Set the executable name in each regen_makefile.sh explicitly with -e,
instead of having it set indirectly from the first .ttcn file. Make it
consistent by placing the name on top of each of these files.
Fix for warning:
ttcn3_makefilegen: warning: File `BSC_Tests.ttcn' was given more than once for the Makefile.
Related: OS#5252
Change-Id: I5ed03f8f3ed905483620dc7bae33b617bbb8507f
Make all regen_makefile.sh more readable and diff friendly by moving
each entry in FILES and CPPFLAGS_TTCN3 into separate lines. Order
entries alphabetically.
Related: OS#5252
Change-Id: I6b6866eb9f6ec6232e4ae434517457a4c8c1c050