apr: Update to version 1.7.4

apr: Update to version 1.7.4

- IPFire3.x
- Update from version 1.7.2 to 1.7.4
- Changelog
    1.7.4
	  *) Fix a regression where writing to a file opened with both APR_FOPEN_APPEND
	     and APR_FOPEN_BUFFERED did not properly append the data on Windows.
	     (This regression was introduced in APR 1.7.3)  [Evgeny Kotkov]
    1.7.3
	  *) apr-1-config: Fix crosscompiling detection in apr-1-config. PR 66510
	     [Ruediger Pluem]
	  *) configure: Add --enable-sysv-shm to use SysV shared memory (shmget) if
	     available. [Ruediger Pluem]
	  *) apr_socket_sendfile: Use WSAIoctl() to get TransmitFile function
	     pointer on Windows. [Ivan Zhakov]
	  *) apr_dir_read: Do not request short file names on Windows 7
	     and later. [Ivan Zhakov]
	  *) apr_file_gets: Optimize for buffered files on Windows.
	     [Evgeny Kotkov]
	  *) Fix a deadlock when writing to locked files opened with APR_FOPEN_APPEND
	     on Windows. PR 50058. [Evgeny Kotkov]
	  *) Don't seek to the end when opening files with APR_FOPEN_APPEND on Windows.
	     [Evgeny Kotkov]
	  *) apr_file_write: Optimize large writes to buffered files on Windows.
	     [Evgeny Kotkov]
	  *) apr_file_read: Optimize large reads from buffered files on Windows.
	     [Evgeny Kotkov]

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>