regen_makefile.sh: files/flags in separate lines

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
diff --git a/lapdm/regen_makefile.sh b/lapdm/regen_makefile.sh
index bb02fe8..2eb1366 100755
--- a/lapdm/regen_makefile.sh
+++ b/lapdm/regen_makefile.sh
@@ -1,5 +1,14 @@
 #!/bin/sh
 
-FILES="*.ttcn UD_PT.cc UD_PT.hh RLCMAC_EncDec.cc L1CTL_PortType_CtrlFunctDef.cc"
+FILES="
+	*.ttcn
+	L1CTL_PortType_CtrlFunctDef.cc
+	RLCMAC_EncDec.cc
+	UD_PT.cc
+	UD_PT.hh
+"
+
+export CPPFLAGS_TTCN3="
+"
 
 ../regen-makefile.sh L1CTL_Test.ttcn $FILES