[bug-gnu-libiconv] windres.exe failure on MinGW - build 1.12

[jake]

Bruno,

While 1.11 compiled cleanly as is, I am having trouble
building 1.12 into a static library on 32-bit WinXP
Pro + SP3 + MinGW-5.1.4/MSYS-1.0.10:

./configure --enable-static=yes --enable-shared=no \
            --enable-relocatable --enable-extra-encodings  \
            && make

make[1]: Entering directory `/pgx/build_win/libiconv.build/lib'
windres `/bin/sh ../../../libiconv-1.12/lib/../windows/windres-options --escape 
1.12` -i ../../../libiconv-1.12/lib/../windows/libiconv.rc -o libiconv.res 
--output-format=coff
sed: -e expression #2, char 32: Extra characters after command
sed: -e expression #2, char 55: Extra characters after command
sed: -e expression #2, char 78: Extra characters after command
c:\MinGW\bin\windres.exe: ../../../libiconv-1.12/lib/../windows/libiconv.rc:6: 
syntax error
make[1]: *** [libiconv.res] Error 1
make[1]: Leaving directory `/pgx/build_win/libiconv.build/lib'
make: *** [all] Error 2

same result when I converted the line ending from LF to CRLF:
        windows/libiconv.rc
        windows/iconv.rc

looking at the changelog, I notice there have been a number
of changes when you switched to gnulib, along with the removal
of all the Makefile.msvc in the tree.

suggestions?

Jake