rebuild all cameras as .so-modules; add 16-bit monochrome ZWO-ASI support (not fully tested yet)

ccdfunc.h

@@ -64,6 +64,7 @@ typedef struct{
     int (*check)();             // check if the device is available, connect and init
     int Ndevices;               // amount of devices found
     void (*close)();            // disconnect & close device
+    int (*startexposition)();   // start exposition
     int (*pollcapture)(capture_status *st, float *remain);// start or poll capture process, `remain` - time remain (s)
     int (*capture)(IMG *ima);   // capture an image, struct `ima` should be prepared before
     void (*cancel)();           // cancel exposition