svox: add package

Signed-off-by: Alessandro Di Marco <dmr@ethzero.com>

sound/svox/patches/0012-no-headers.patch

@@ -0,0 +1,46 @@
+diff -urN a/pico/Makefile.am b/pico/Makefile.am
+--- a/pico/Makefile.am	2015-01-22 01:33:21.470895431 +0100
++++ b/pico/Makefile.am	2015-01-22 01:36:03.042228475 +0100
+@@ -34,42 +34,6 @@
+ 	lib/picotrns.c \
+ 	lib/picowa.c
+ 
+-libttspico_ladir = $(includedir)
+-libttspico_la_HEADERS = \
+-    lib/picoacph.h \
+-    lib/picoapid.h \
+-    lib/picoapi.h \
+-    lib/picobase.h \
+-    lib/picocep.h \
+-    lib/picoctrl.h \
+-    lib/picodata.h \
+-    lib/picodbg.h \
+-    lib/picodefs.h \
+-    lib/picodsp.h \
+-    lib/picoextapi.h \
+-    lib/picofftsg.h \
+-    lib/picokdbg.h \
+-    lib/picokdt.h \
+-    lib/picokfst.h \
+-    lib/picoklex.h \
+-    lib/picoknow.h \
+-    lib/picokpdf.h \
+-    lib/picokpr.h \
+-    lib/picoktab.h \
+-    lib/picoos.h \
+-    lib/picopal.h \
+-    lib/picopam.h \
+-    lib/picopltf.h \
+-    lib/picopr.h \
+-    lib/picorsrc.h \
+-    lib/picosa.h \
+-    lib/picosig2.h \
+-    lib/picosig.h \
+-    lib/picospho.h \
+-    lib/picotok.h \
+-    lib/picotrns.h \
+-    lib/picowa.h
+-
+ libttspico_la_LIBADD = -lm
+ 
+ picolangdir = $(datadir)/pico/lang