Add runtimes only if the ndk version is low enough

[A2va]

and a warning, if the current config have a deprecated runtime

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[A2va]

This is strange, the CI on linux fails with this stacktrace:

error: @programdir/core/main.lua:329: @programdir/modules/async/runjobs.lua:325: @programdir/core/tool/toolchain.lua:371: @programdir/core/base/semver.lua:135: attempt to compare nil with number
stack traceback:
    [@programdir/core/base/semver.lua:135]: in function 'le'
    [@programdir/toolchains/ndk/load.lua:100]:

Even if I check the non nil value of ndk_sdkver

local old_runtimes = {"gnustl_static", "gnustl_shared", "stlport_static", "stlport_shared"}
if ndk_sdkver and semver.new(ndk_sdkver):le("r18") then
    toolchain:add("runtimes", table.unpack(old_runtimes))
end

[SirLynix]

I think the semver isn't recognized (as it's not a semver format, e.g. x.y.z.) returning nil

[A2va]

I have come up with a solution, but wouldn't it be better to get a minor and patch version of ndk?

xmake/xmake/modules/detect/sdks/find_ndk.lua

Lines 232 to 235 in a54fed5

	ndk_version_info = ndk_version_info:match("#define __NDK_MAJOR__ (%d+)")
	if ndk_version_info then
	ndkver = tonumber(ndk_version_info)
	end

[waruqi]

why not use ndkver?

xmake/xmake/toolchains/ndk/load.lua

Line 82 in a54fed5

local ndkver = toolchain:config("ndkver")

xmake/xmake/toolchains/ndk/load.lua

Line 320 in a54fed5

elseif ndkver and ndkver >= 26 then

[A2va]

I got confused between ndk_sdkver and ndkver