MCOL-3606 Make ColumnStore use generic paths

ColumnStore now uses standard bin/lib paths for pretty much everything.
Data path is now hard-coded to /var/lib/columnstore.

This patch also:

* Removes v1 decompression
* Removes a bunch of unneeded files
* Removes COLUMNSTORE_INSTALL_DIR / $INSTALLDIR
* Makes my.cnf.d work for all platforms (MCOL-3558)
* Changes configcpp to use recursive mutex (fixes possible config write deadlock)
* Fixes MCOL-3599 Fix regr functions, The library was installed in the wrong location
* Fixes a bunch of Ubuntu packaging issues
* Changes the binary names of several of the executables so as not to
clash with potential executables from other packages

build/debian/libs/postinst

@@ -1,8 +1,7 @@
 #!/bin/bash -e
 
 rpmmode=install
-prefix=/usr/local
 
 echo "MariaDB ColumnStore install completed"
 
-exit 0
+exit 0

build/debian/platform/postinst

@@ -1,10 +1,9 @@
 #!/bin/bash -e
 
 rpmmode=install
-prefix=/usr/local
 
-test -x /usr/local/mariadb/columnstore/bin/post-install && /usr/local/mariadb/columnstore/bin/post-install --prefix=$prefix --rpmmode=$rpmmode
+columnstore-post-install --rpmmode=$rpmmode
 
 echo "MariaDB ColumnStore install completed"
 
-exit 0
+exit 0

build/debian/platform/prerm

@@ -1,6 +1,6 @@
 #!/bin/bash -e
 
-test -x /usr/local/mariadb/columnstore/bin/pre-uninstall && /usr/local/mariadb/columnstore/bin/pre-uninstall
+columnstore-pre-uninstall
 
 exit 0
 

build/debian/storageEngine/postinst

@@ -1,7 +1,6 @@
 #!/bin/bash -e
 
 rpmmode=install
-prefix=/usr/local
 
 echo "MariaDB ColumnStore install completed"