Deprecate java_invoke, replace with javaMethod. Update all m-files to use javaMethod. * scripts/deprecated/java_invoke.m: New m-file with warning about function being deprecated. * libinterp/octave-value/ov-java.cc(Fjava_invoke, FjavaMethod): Remove java_invoke. Replace body of javaMethod with old java_invoke code. * libinterp/octave-value/ov-java.cc(do_java_invoke): Rename to do_javaMethod. * libinterp/octave-value/ov-java.cc(do_java_create): Rename to do_javaObject. * libinterp/octave-value/ov-java.h(do_java_invoke, do_java_create): Rename prototypes for functions to do_javaMethod and do_javaObject respectively. * scripts/deprecated/javafields.m, scripts/deprecated/javamethods.m, scripts/deprecated/module.mk, scripts/general/fieldnames.m, scripts/general/methods.m, scripts/java/errordlg.m, scripts/java/helpdlg.m, scripts/java/inputdlg.m, scripts/java/javaArray.m, scripts/java/javaaddpath.m, scripts/java/javaclasspath.m, scripts/java/javamem.m, scripts/java/javarmpath.m, scripts/java/listdlg.m, scripts/java/msgbox.m, scripts/java/questdlg.m, scripts/java/warndlg.m: Replace java_invoke calls with javaMethod calls.

--- a/scripts/java/listdlg.m
+++ b/scripts/java/listdlg.m
@@ -128,7 +128,7 @@
    listsize = {num2str(listsize(2)), num2str(listsize(1))};
    initialvalue = arrayfun (@num2str, initialvalue, "UniformOutput", false);
    
-   ret = java_invoke ("org.octave.JDialogBox", "listdlg", listcell,
+   ret = javaMethod ("listdlg", "org.octave.JDialogBox", listcell,
                       selmode, listsize, initialvalue, name, prompt,
                       okstring, cancelstring);