add new plist_dict_merge() function
change build system to autotools
libcnary: silence two compiler warnings
xplist: fix shadowed variable declaration
xplist: silence compiler warning
base64: silence compiler warning by using correct type
bytearray: silence compiler warning about pointer arithmetic with cast
xplist: fix another compiler warning with cast
bplist: make plist_utf8_to_utf16 static since it is only used internally
fix installation of pkgconfig files