Store the value for the specified key in \a data. Will store a
* NUL-terminated string for string entries. The \a data pointer returned will
* point to an internally allocated buffer. The caller should make a
* copy of the data before any subsequent modification or destruction
* of the property list.
* Returns zero on success, negative on error. \since 0.9.11
Store the value for the specified key in \a data. Will store a * NUL-terminated string for string entries. The \a data pointer returned will * point to an internally allocated buffer. The caller should make a * copy of the data before any subsequent modification or destruction * of the property list. * Returns zero on success, negative on error. \since 0.9.11