configure.{sh,fsx}: fix bad order of tool findings

When porting stable's branch commit [1] to master branch [2] we
missed the fact that our configure.fsx script in the master
branch checks for `dotnet` executable before the OS match block
so the " found" string was not being printed first.

This fixes it with a flag so that if someone calls the .fsx file
by hand then the " found" string doesn't show up in that case.

[1] ae9f2a6
[2] 0b23222

configure.sh

@@ -73,4 +73,4 @@ if [ ! -z "${RUNNER_ARG}" ]; then
     echo -e "FsxRunnerArg=$RUNNER_ARG" >> scripts/build.config
 fi
 source scripts/build.config
-DOTNET_NOLOGO=true $RUNNER_BIN $RUNNER_ARG ./scripts/configure.fsx "$@"
+DOTNET_NOLOGO=true $RUNNER_BIN $RUNNER_ARG ./scripts/configure.fsx --from-configure "$@"

scripts/configure.fsx

@@ -2,6 +2,7 @@
 
 open System
 open System.IO
+open System.Linq
 
 #if !LEGACY_FRAMEWORK
 #r "nuget: Fsdk, Version=0.6.0--date20231031-0834.git-2737eea"
@@ -18,6 +19,10 @@ open Fsdk.Process
 #load "fsxHelper.fs"
 open GWallet.Scripting
 
+let argsToThisFsxScript = Misc.FsxOnlyArguments()
+if argsToThisFsxScript.Any(fun arg -> arg = "--from-configure") then
+    Console.WriteLine " found"
+
 let rootDir = DirectoryInfo(Path.Combine(__SOURCE_DIRECTORY__, ".."))
 let stableVersionOfMono = Version("6.6")
 
@@ -39,10 +44,6 @@ let buildTool, legacyBuildTool, areGtkLibsAbsentOrDoesNotApply =
 
         dotnetCmd, msbuildCmd, true
     | platform (* Unix *) ->
-
-        // because it comes from configure.sh's "Checking for a working F# REPL..."
-        Console.WriteLine " found"
-
         Process.ConfigCommandCheck ["make"] true true |> ignore
 
         match Process.ConfigCommandCheck ["mono"] false true with
@@ -158,7 +159,7 @@ if buildTool.IsNone && legacyBuildTool.IsNone then
 
     Environment.Exit 1
 
-let prefix = DirectoryInfo(Misc.GatherOrGetDefaultPrefix(Misc.FsxOnlyArguments(), false, None))
+let prefix = DirectoryInfo(Misc.GatherOrGetDefaultPrefix(argsToThisFsxScript, false, None))
 
 if not (prefix.Exists) then
     let warning = sprintf "WARNING: prefix doesn't exist: %s" prefix.FullName
@@ -217,7 +218,7 @@ let configFileToBeWritten =
 
     let finalConfigFile =
         let nativeSegwitEnabled =
-            Misc.FsxOnlyArguments()
+            argsToThisFsxScript
             |> List.contains "--native-segwit"
         if nativeSegwitEnabled then
             configFileStageThree