Refactor MSDOS rule filenames; set LSI C language

Renamed multiple db/MSDOS detection rule files to include category prefixes (compiler_, library_, protector_, self-displayer_, sfx_) for clearer organization. Cleared executable bits on LSI_C and Khrome_Crypt files (100755 → 100644). Added sLang = "C" to the LSI C detection rule to explicitly mark the language. No other functional changes.

db/MSDOS/compiler_LSI_C.4.sg

@@ -1,14 +1,16 @@
-// Detect It Easy: detection rule file
-// Author: hypn0 <hypn0@mail.ru>
-
-meta("compiler", "LSI C-86");
-
-function detect() {
-    if (MSDOS.compareEP("b8....8ed0bc....368c......b430cd2136......8a......32ff438e......161f33ffb9....32c0fceb")) {
-        bDetected = true;
-    } else if (MSDOS.compareEP("b8....8ec00617bc....268c......b430cd2126a3....fcbe....8a0e....32edbf....f3a426......47")) {
-        bDetected = true;
+// Detect It Easy: detection rule file
+// Author: hypn0 <hypn0@mail.ru>
+
+meta("compiler", "LSI C-86");
+
+function detect() {
+    if (MSDOS.compareEP("b8....8ed0bc....368c......b430cd2136......8a......32ff438e......161f33ffb9....32c0fceb")) {
+        bDetected = true;
+    } else if (MSDOS.compareEP("b8....8ec00617bc....268c......b430cd2126a3....fcbe....8a0e....32edbf....f3a426......47")) {
+        bDetected = true;
     }
 
+    sLang = "C";
+
     return result();
 }

db/MSDOS/protector_Khrome_Crypt.2.sg

@@ -1,13 +1,13 @@
-// Detect It Easy: detection rule file
-// Author: horsicq <horsicq@gmail.com>
-
-meta("protector", "Khrome Crypt");
-
-function detect() {
-    if (MSDOS.compareEP("B9....B8....EB..80....EB..EB..EB..66..........66")) {
-        sVersion = "0.3";
-        bDetected = true;
-    }
-
-    return result();
+// Detect It Easy: detection rule file
+// Author: horsicq <horsicq@gmail.com>
+
+meta("protector", "Khrome Crypt");
+
+function detect() {
+    if (MSDOS.compareEP("B9....B8....EB..80....EB..EB..EB..66..........66")) {
+        sVersion = "0.3";
+        bDetected = true;
+    }
+
+    return result();
 }