Bump json version number for release, and update its NEWS file.
Bug fixes and enhancement in json extension.
gawk-gd: error: incompatible function pointer types initializing 'awk_value_t *(*const)(int, awk_value_t *, struct awk_ext_func *)' (aka 'struct awk_value *(*const)(int, struct awk_value *, struct awk_ext_func *)') with an expression of type 'awk_value_t *(int, awk_value_t *)' (aka 'struct awk_value *(int, struct awk_value *)') [-Wincompatible-function-pointer-types]
Build log
gawk-haru: error: incompatible function pointer types initializing 'awk_value_t *(*const)(int, awk_value_t *, struct awk_ext_func *)' (aka 'struct awk_value *(*const)(int, struct awk_value *, struct awk_ext_func *)') with an expression of type 'awk_value_t *(int, awk_value_t *)' (aka 'struct awk_value *(int, struct awk_value *)') [-Wincompatible-function-pointer-types]
gawk-csv: Sync with xhtml2doc from gawk-xml
Fix make uninstall bug
Small fixes
Small fixes