- spec file usable under SLE12 again and better prepared for
phpM -> phpMN transition

- added to SLE-15-SP2 [jsc#SLE-12482]

- added to SLE-15-SP2 [SLE-10860], fixes
CVE-2019-11043 [bsc#1154999]
CVE-2019-11041 [bsc#1146360]
CVE-2019-11042 [bsc#1145095]
CVE-2019-11039 [bsc#1138173]
CVE-2019-11040 [bsc#1138172]
CVE-2019-11036 [bsc#1134322]
CVE-2019-11034 [bsc#1132838]
CVE-2019-11035 [bsc#1132837]
CVE-2019-9637 [bsc#1128892]
CVE-2019-9675 [bsc#1128886]
CVE-2019-9638 [bsc#1128889], CVE-2019-9639 [bsc#1128887]
CVE-2019-9640 [bsc#1128883]
CVE-2019-9024 [bsc#1126821]
CVE-2019-9020 [bsc#1126711]
CVE-2018-20783 [bsc#1127122]
CVE-2019-9021 [bsc#1126713]
CVE-2019-9022 [bsc#1126827]
CVE-2019-9023 [bsc#1126823]
CVE-2019-9641 [bsc#1128722]
CVE-2018-19935 [bsc#1118832]
CVE-2018-17082 [bsc#1108753]
CVE-2018-1000222 [bsc#1105434]
CVE-2018-14851 [bsc#1103659]
CVE-2017-9120 [bsc#1103661]