patch 8.0.1182: cannot see or change mzscheme dll name

Problem:    Cannot see or change mzscheme dll name.
Solution:   Add 'mzschemedll' and 'mzschemegcdll'.
diff --git a/src/if_mzsch.c b/src/if_mzsch.c
index c9c5969..54474bd 100644
--- a/src/if_mzsch.c
+++ b/src/if_mzsch.c
@@ -757,7 +757,7 @@
 mzscheme_enabled(int verbose)
 {
     return mzscheme_runtime_link_init(
-	    DYNAMIC_MZSCH_DLL, DYNAMIC_MZGC_DLL, verbose) == OK;
+	    (char *)p_mzschemedll, (char *)p_mzschemegcdll, verbose) == OK;
 }
 
     static void
diff --git a/src/option.c b/src/option.c
index 4e2b929..2743f16 100644
--- a/src/option.c
+++ b/src/option.c
@@ -2008,6 +2008,24 @@
     {"mousetime",   "mouset",	P_NUM|P_VI_DEF,
 			    (char_u *)&p_mouset, PV_NONE,
 			    {(char_u *)500L, (char_u *)0L} SCRIPTID_INIT},
+    {"mzschemedll", NULL,   P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
+#if defined(DYNAMIC_MZSCHEME)
+			    (char_u *)&p_mzschemedll, PV_NONE,
+			    {(char_u *)DYNAMIC_MZSCH_DLL, (char_u *)0L}
+#else
+			    (char_u *)NULL, PV_NONE,
+			    {(char_u *)"", (char_u *)0L}
+#endif
+			    SCRIPTID_INIT},
+    {"mzschemegcdll", NULL, P_STRING|P_EXPAND|P_VI_DEF|P_SECURE,
+#if defined(DYNAMIC_MZSCHEME)
+			    (char_u *)&p_mzschemegcdll, PV_NONE,
+			    {(char_u *)DYNAMIC_MZGC_DLL, (char_u *)0L}
+#else
+			    (char_u *)NULL, PV_NONE,
+			    {(char_u *)"", (char_u *)0L}
+#endif
+			    SCRIPTID_INIT},
     {"mzquantum",  "mzq",   P_NUM,
 #ifdef FEAT_MZSCHEME
 			    (char_u *)&p_mzq, PV_NONE,
diff --git a/src/option.h b/src/option.h
index ecd70dc..88eadae 100644
--- a/src/option.h
+++ b/src/option.h
@@ -662,6 +662,10 @@
 EXTERN int	p_more;		/* 'more' */
 #ifdef FEAT_MZSCHEME
 EXTERN long	p_mzq;		/* 'mzquantum */
+# if defined(DYNAMIC_MZSCHEME)
+EXTERN char_u	*p_mzschemedll;	/* 'mzschemedll' */
+EXTERN char_u	*p_mzschemegcdll; /* 'mzschemegcdll' */
+# endif
 #endif
 #if defined(MSWIN)
 EXTERN int	p_odev;		/* 'opendevice' */
diff --git a/src/version.c b/src/version.c
index 0ca3f05..ce9fda8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1182,
+/**/
     1181,
 /**/
     1180,