devel/libffi on ARM

[John Klos <john%ziaspace.com@localhost>]

It seems that devel/libffi/patches/patch-src_arm_sysv.S causes libffi to 
fail on NetBSD 7 on evbarm:

depbase=`echo src/arm/sysv.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`; 
/bin/sh ./libtool     --mode=compile gcc -DHAVE_CONFIG_H  -I. -I..  -I. 
-I../include -Iinclude -I../src   -I. -I../include -Iinclude -I../src -O2 
-MT src/arm/sysv.lo -MD -MP -MF $depbase.Tpo -c -o src/arm/sysv.lo 
../src/arm/sysv.S && mv -f $depbase.Tpo $depbase.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -Iinclude 
-I../src -O2 -MT src/arm/sysv.lo -MD -MP -MF src/arm/.deps/sysv.Tpo -c 
../src/arm/sysv.S  -fPIC -DPIC -o src/arm/.libs/sysv.o
../src/arm/sysv.S: Assembler messages:
../src/arm/sysv.S:244: Error: .cfi_endproc without corresponding 
.cfi_startproc
../src/arm/sysv.S:320: Error: .cfi_endproc without corresponding 
.cfi_startproc
../src/arm/sysv.S:424: Error: .cfi_endproc without corresponding 
.cfi_startproc
../src/arm/sysv.S:487: Error: .cfi_endproc without corresponding 
.cfi_startproc
*** Error code 1

Stop.
make[3]: stopped in 
/usr/pkgsrc/devel/libffi/work/libffi-3.1/arm--netbsdelf
*** Error code 1

Moving that patch out of the way allows it to compile and install.

John