php: Fix of 5 CVEs

CVE-2019-9023: mbstring oniguruma: fix heap overflow in utf32bembctocode and related mbctocode encoders bug 77418; completes CVE-2019-9023 coverage alongside existing php-5.3.29-bug773707737177381773827738577394.patch - CVE-2019-11034: exif: fix heap-buffer-overflow in phpifdget32s bug 77753 -...