編譯GDAL支持MySQL

GDAL支持MySQL需要MySQL的庫纔可以，編譯很簡單，修改nmake.opt文件中對應的MySQL的庫的路徑和lib即可。
nmake.opt文件中397行左右，如下：

# MySQL Libraries
# NOTE: Need /MT instead of /MD, also enable /EHsc switch. 
#MYSQL_INC_DIR = D:\Software\MySQLServer4.1\include
#MYSQL_LIB = D:\Software\MySQLServer4.1\lib\opt\libmysql.lib advapi32.lib

修改爲：

# MySQL Libraries
# NOTE: Need /MT instead of /MD, also enable /EHsc switch. 
MYSQL_INC_DIR = F:\Work\GDAL\gdal_need\MySQL\include
MYSQL_LIB = F:\Work\GDAL\gdal_need\MySQL\lib\libmysql.lib advapi32.lib

然後重新編譯即可。
需要注意的是，將MySQL的dll要拷貝到gdalxx.dll所在的目錄。