[misc] separated ms-sys dependency from application

* set ms-sys to be built as a library
* also removed unused code from badblocks.c

src/ms-sys/inc/file.h

@@ -0,0 +1,27 @@
+#ifndef FILE_H
+#define FILE_H
+
+/* Max valid value of uiLen for contains_data */
+#define MAX_DATA_LEN 4096
+
+/* Checks if a file contains a data pattern of length uiLen at position
+   ulPositoin. The file pointer will change when calling this function! */
+int contains_data(FILE *fp, size_t ulPosition,
+                  const void *pData, size_t uiLen);
+
+/* Writes a data pattern of length uiLen at position ulPositoin.
+   The file pointer will change when calling this function! */
+int write_data(FILE *fp, size_t ulPosition,
+               const void *pData, size_t uiLen);
+
+/* Writes nSectors of size SectorSize starting at sector StartSector */
+int write_sectors(void *hDrive, size_t SectorSize,
+                  size_t StartSector, size_t nSectors,
+                  const void *pBuf);
+
+/* Reads nSectors of size SectorSize starting at sector StartSector */
+int read_sectors(void *hDrive, size_t SectorSize,
+                 size_t StartSector, size_t nSectors,
+                 void *pBuf);
+
+#endif