Class VSIFile: add a writable field reportVSIFErrorAsEof, and check VSIFErrorL() in the read() and eof() methods if GDAL >= 3.10

[ctoney]

• closes VSIFile::eof(): test the return code of the VSIFErrorL() function in GDAL >= 3.10 #899
• adds a read/write field reportVSIFErrorAsEof which defaults to TRUE
• VSIFile::read() emits a warning if a short read occurs and VSIFErrorL() returns TRUE (GDAL >= 3.10)
• VSIFile::eof() emits a warning and returns TRUE if VSIFErrorL() returns TRUE and reportVSIFErrorAsEof is TRUE (GDAL >= 3.10)