mariadb: bump to major version 10.4

Highlights:

- Bump from 10.2.26 to 10.4.10
- auth_pam got replaced with never version, old one still available as
  auth_pam_v1
- semisync plugins were merged into the core
- Upstream now installs symlinks for binaries with mariadb prefix. To
  accommodate that this commit updates Package/mariadb/install/bin
  accordingly.
- Patches are updated with new ones from Debian and Arch (thanks!)
- libedit patch dropped because it's upstream now.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

utils/mariadb/patches/110-pcre.cmake.patch

@@ -1,11 +1,36 @@
+From: =?utf-8?q?Ond=C5=99ej_Sur=C3=BD?= <ondrej@debian.org>
+Date: Wed, 22 Nov 2017 06:05:45 +0000
+Subject: Revert to using system pcre library
+
+---
+ cmake/pcre.cmake | 16 ++--------------
+ 1 file changed, 2 insertions(+), 14 deletions(-)
+
 --- a/cmake/pcre.cmake
 +++ b/cmake/pcre.cmake
-@@ -14,6 +14,8 @@ MACRO (CHECK_PCRE)
-         return -pcre_exec(NULL, NULL, NULL, -999, -999, 0, NULL, 0) < 256;
-         }"  PCRE_STACK_SIZE_OK)
-       SET(CMAKE_REQUIRED_LIBRARIES)
-+    ELSE()
-+      SET(PCRE_STACK_SIZE_OK TRUE)
-     ENDIF()
+@@ -1,23 +1,11 @@
+-INCLUDE (CheckCSourceRuns)
+-
+ SET(WITH_PCRE "auto" CACHE STRING
+    "Which pcre to use (possible values are 'bundled', 'system', or 'auto')")
+ 
+ MACRO (CHECK_PCRE)
+   IF(WITH_PCRE STREQUAL "system" OR WITH_PCRE STREQUAL "auto")
+-    CHECK_LIBRARY_EXISTS(pcre pcre_stack_guard "" HAVE_PCRE_STACK_GUARD)
+-    IF(NOT CMAKE_CROSSCOMPILING)
+-      SET(CMAKE_REQUIRED_LIBRARIES "pcre")
+-      CHECK_C_SOURCE_RUNS("
+-        #include <pcre.h>
+-        int main() {
+-        return -pcre_exec(NULL, NULL, NULL, -999, -999, 0, NULL, 0) < 256;
+-        }"  PCRE_STACK_SIZE_OK)
+-      SET(CMAKE_REQUIRED_LIBRARIES)
+-    ENDIF()
++    CHECK_LIBRARY_EXISTS(pcre pcre_stack_guard "" HAVE_PCRE)
    ENDIF()
-   IF(NOT HAVE_PCRE_STACK_GUARD OR NOT PCRE_STACK_SIZE_OK OR
+-  IF(NOT HAVE_PCRE_STACK_GUARD OR NOT PCRE_STACK_SIZE_OK OR
+-     WITH_PCRE STREQUAL "bundled")
++  IF(NOT HAVE_PCRE OR WITH_PCRE STREQUAL "bundled")
+     IF (WITH_PCRE STREQUAL "system")
+       MESSAGE(FATAL_ERROR "system pcre is not found or unusable")
+     ENDIF()