rrdtool-1.0.x: pod2man warnings treated as errors, cause build fail

Formatting warnings thrown by pod2man during the build of rrdtool-1.0.x cause the build to fail.

This patch adds '--stderr' to pod2man command in rrdtool-1.0.55/doc/Makefile.am which sends the warning to stderr and the build is able to continue.

Signed-off-by John Vogel <jvogel4@stny.rr.com>

---diff --git a/libs/rrdtool-1.0.x/patches/030-pod2man-stderr.patch b/libs/rrdtool-1.0.x/patches/030-pod2man-stderr.patch
new file mode 100644
index 0000000..feadf3a
[packages] tvheadend: update to 3.4

- change download location
- remove patches: they are not necessary now

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>