generalize shared code from regen_makefile.sh into shared helper script

Change-Id: I86a738420851a7d9e3bdb2671f6862c3d505a4ba
diff --git a/lapdm/regen_makefile.sh b/lapdm/regen_makefile.sh
index c80b094..c3601c8 100755
--- a/lapdm/regen_makefile.sh
+++ b/lapdm/regen_makefile.sh
@@ -2,12 +2,4 @@
 
 FILES="*.ttcn UD_PT.cc UD_PT.hh RLCMAC_EncDec.cc"
 
-ttcn3_makefilegen -f L1CTL_Test.ttcn $FILES
-sed -i -e 's/# TTCN3_DIR = /TTCN3_DIR = \/usr/' Makefile
-sed -i -e 's/LDFLAGS = /LDFLAGS = -L \/usr\/lib\/titan `pkg-config --libs libnetfilter_conntrack`/' Makefile
-#sed -i -e 's/TTCN3_LIB = ttcn3-parallel/TTCN3_LIB = ttcn3/' Makefile
-sed -i -e 's/CPPFLAGS = -D$(PLATFORM) -I$(TTCN3_DIR)\/include/CPPFLAGS = -D$(PLATFORM) -I$(TTCN3_DIR)\/include -I\/usr\/include\/titan/' Makefile
-
-# for TITAN 6.3.0
-sed -i -e 's/TTCN3_DIR = $/TTCN3_DIR = \/usr/' Makefile
-sed -i -e 's/\/bin\/compiler/\/bin\/ttcn3_compiler/' Makefile
+../regen-makefile.sh L1CTL_Test.ttcn $FILES