compile-time configurable paths

From: eroen <eroen@occam.eroen.eu>

hack/
./
---
 library/Core.cpp |   12 ++++++++++++
 plugins/zone.cpp |    2 ++
 2 files changed, 14 insertions(+)

diff --git a/library/Core.cpp b/library/Core.cpp
index 7a45bf2..4d714b6 100644
--- a/library/Core.cpp
+++ b/library/Core.cpp
@@ -323,7 +323,11 @@ static command_result runRubyScript(color_ostream &out, PluginManager *plug_mgr,
         rbcmd += "'" + args[i] + "', ";
     rbcmd += "]\n";
 
+#ifdef DFHACK_DATA_DESTINATION
+    rbcmd += "catch(:script_finished) { load '" DFHACK_DATA_DESTINATION "/scripts/" + name + ".rb' }";
+#else
     rbcmd += "catch(:script_finished) { load './hack/scripts/" + name + ".rb' }";
+#endif
 
     return plug_mgr->ruby->eval_ruby(out, rbcmd.c_str());
 }
@@ -411,7 +415,11 @@ string findScript(string path, string name) {
     if (fileExists(file)) {
         return file;
     }
+    #ifdef DFHACK_DATA_DESTINATION
+    file = string(DFHACK_DATA_DESTINATION) + "/scripts/" + name;
+    #else
     file = path + "/hack/scripts/" + name;
+    #endif
     if (fileExists(file)) {
         return file;
     }
@@ -974,7 +982,11 @@ void Core::fatal (std::string output, bool deactivate)
 std::string Core::getHackPath()
 {
 #ifdef LINUX_BUILD
+    #ifdef DFHACK_DATA_DESTINATION
+    return DFHACK_DATA_DESTINATION "/";
+    #else
     return p->getPath() + "/hack/";
+    #endif
 #else
     return p->getPath() + "\\hack\\";
 #endif
diff --git a/plugins/zone.cpp b/plugins/zone.cpp
index c88e821..0ea0ec4 100644
--- a/plugins/zone.cpp
+++ b/plugins/zone.cpp
@@ -3194,8 +3194,10 @@ command_result df_autobutcher(color_ostream &out, vector <string> & parameters)
     {
         string run = "dfhack-run autobutcher ";
 #ifdef LINUX_BUILD
+#ifndef DFHACK_DATA_DESTINATION
         run = "./dfhack-run autobutcher ";
 #endif
+#endif
         // force creation of config
         out << run << "start" << endl;