code/curl: update ifdef condition for MCST-LCC compiler

in mcst-lcc compiler => 1.25 added a new macro definition to determine compiler

Author: r-a-sattarov

code/libcurl-7.35.0/curl/curlbuild.h

@@ -288,7 +288,7 @@
 #  define CURL_SIZEOF_CURL_SOCKLEN_T 4
 
 #elif defined(__LCC__)
-#  if defined(__e2k__) /* MCST eLbrus C Compiler */
+#  if defined(__MCST__) /* MCST eLbrus Compiler Collection */
 #    define CURL_SIZEOF_LONG           8
 #    define CURL_TYPEOF_CURL_OFF_T     long
 #    define CURL_FORMAT_CURL_OFF_T     "ld"