Fixed build of manpages

To build manpages run cmake with option -DWITH_DOCS=ON.
Creation of man pages requires Python3 and Docygen.

The bundled manpaes were removed from repository.

man/mysql_commit.3

@@ -1,33 +0,0 @@
-.\" Automatically generated by Pandoc 2.5
-.\"
-.TH "mysql_commit" "3" "" "Version 3.3.1" "MariaDB Connector/C"
-.hy
-.SS Name
-.PP
-mysql_commit \- Commits the current transaction
-.SS Synopsis
-.IP
-.nf
-\f[C]
-#include <mysql.h>
-
-my_bool mysql_commit(MYSQL * mysql);
-\f[R]
-.fi
-.SS Description
-.PP
-Commits the current transaction for the specified database connection.
-Returns zero on success, nonzero if an error occurred.
-.SS Parameters
-.IP \[bu] 2
-\f[C]mysql\f[R] is a connection identifier, which was previously
-allocated by \f[B]mysql_init(3)\f[R] and connected by
-\f[B]mysql_real_connect(3)\f[R].
-.SS Notes
-.PP
-Executing mysql_commit() will not affected the behaviour of autocommit.
-This means, any update or insert statements following mysql_commit()
-will be rolled back when the connection gets closed.
-.PP
-== See also * \f[B]mysql_autocommit(3)\f[R] *
-\f[B]mysql_rollback(3)\f[R]