Added solaris platform

To compile on solaris some libs had to be linked. So far I was only able
to test it on OmniOS r151006

makefile

@@ -10,7 +10,7 @@
 #   print	           print the build settings
 
 PLAT?= linux
-PLATS= macosx linux win32 mingw freebsd
+PLATS= macosx linux win32 mingw freebsd solaris
 
 all: $(PLAT)
 

src/makefile

@@ -55,7 +55,7 @@ LDIR_linux?=share/lua/$(LUAV)
 
 # LUAINC_freebsd:
 # /usr/local/include/lua$(LUAV)
-# where lua headers are found for linux builds
+# where lua headers are found for freebsd builds
 LUAINC_freebsd_base?=/usr/local/include/
 LUAINC_freebsd?=$(LUAINC_freebsd_base)/lua$(LUAV)
 LUAPREFIX_freebsd?=/usr/local/
@@ -86,6 +86,13 @@ LUALIB_win32?=$(LUAPREFIX_win32)/lib/lua/$(LUAV)/$(PLATFORM_win32)
 LUALIBNAME_win32?=lua$(subst .,,$(LUAV)).lib 
 
 
+# LUAINC_solaris:
+LUAINC_solaris_base?=/usr/include
+LUAINC_solaris?=$(LUAINC_solaris_base)/lua/$(LUAV)
+LUAPREFIX_solaris?=/usr/local
+CDIR_solaris?=lib/lua/$(LUAV)
+LDIR_solaris?=share/lua/$(LUAV)
+
 # prefix: /usr/local /usr /opt/local /sw
 # the top of the default install tree
 prefix?=$(LUAPREFIX_$(PLAT))
@@ -132,7 +139,7 @@ print:
 #------
 # Supported platforms
 #
-PLATS= macosx linux win32 mingw
+PLATS= macosx linux win32 mingw solaris
 
 #------
 # Compiler and linker settings
@@ -182,6 +189,22 @@ LDFLAGS_freebsd=-O -shared -fpic -o
 LD_freebsd=gcc
 SOCKET_freebsd=usocket.o
 
+#------
+# Compiler and linker settings
+# for Solaris
+SO_solaris=so
+O_solaris=o
+CC_solaris=gcc
+DEF_solaris=-DLUASOCKET_$(DEBUG) \
+	-DLUASOCKET_API='__attribute__((visibility("default")))' \
+	-DUNIX_API='__attribute__((visibility("default")))' \
+	-DMIME_API='__attribute__((visibility("default")))'
+CFLAGS_solaris=-I$(LUAINC) $(DEF) -Wall -Wshadow -Wextra \
+	-Wimplicit -O2 -ggdb3 -fpic -fvisibility=hidden   
+LDFLAGS_solaris=-lnsl -lsocket -lresolv -O -shared -fpic -o 
+LD_solaris=gcc
+SOCKET_solaris=usocket.o
+
 #------
 # Compiler and linker settings
 # for MingW
@@ -333,6 +356,9 @@ linux:
 mingw:
 	$(MAKE) all PLAT=mingw
 	
+solaris:
+	$(MAKE) all-unix PLAT=solaris
+
 none:
 	@echo "Please run"
 	@echo "   make PLATFORM"