regen-makefile.sh: Put libraries in LINUX_LIBS, not LDFLAGS

Additional libraries to be linked should be in LINUX_LIBS (appended at
the end of the linker command), not part of LDFLAGS (prepended to
the beginning of the linker command).

On binutils 2.35.1 / Debian unstable, without this patch, I get

/usr/bin/ld: IPL4asp_PT.so: undefined reference to `sctp_bindx'
/usr/bin/ld: IPL4asp_PT.so: undefined reference to `sctp_connectx'

which is resolved by this patch

Change-Id: I8a339076f445e3c650e407ae982c7c2dc4a760b2
diff --git a/regen-makefile.sh b/regen-makefile.sh
index f6e9538..086c124 100755
--- a/regen-makefile.sh
+++ b/regen-makefile.sh
@@ -45,7 +45,8 @@
 TITAN_VERSION=$(ttcn3_makefilegen -v 2>&1 |grep "Product number" |cut --delimiter="/" -f 2-| sed -e "s/[A-Z ]//g")
 
 sed -i -e 's/# TTCN3_DIR = /TTCN3_DIR = \/usr/' Makefile
-sed -i -e 's/LDFLAGS = /LDFLAGS = -L \/usr\/lib\/titan -lsctp /' Makefile
+sed -i -e 's/LDFLAGS = /LDFLAGS = -L \/usr\/lib\/titan/' Makefile
+sed -i -e 's/LINUX_LIBS = -lxml2/LINUX_LIBS = -lxml2 -lsctp/' Makefile
 #sed -i -e 's/TTCN3_LIB = ttcn3-parallel/TTCN3_LIB = ttcn3/' Makefile
 
 # The -DMAKEDEPEND_RUN is a workaround for Debian packaging issue,